Question 11 MarkName the electrode from which aluminium is collected in Hall-Heroult's process.AnswerCathode (Gas carbon lining)View full question & answer→
Question 21 MarkName the ore of zinc containing its sulphide.AnswerZinc blendeView full question & answer→
Question 31 MarkName the gas evolved on reaction of aluminium with boiling concentrated alkali solution.AnswerHydrogenView full question & answer→
Question 41 MarkName a metal which is found abundantly in the earth's crust.AnswerAluminiumView full question & answer→
Question 51 MarkName the process used for the purification of bauxite.AnswerBaeyer's processView full question & answer→
Question 61 MarkThe process by which the conversion of aluminium hydroxide to pure alumina.AnswerThermal decompositionView full question & answer→
Question 71 MarkThe impurity which separates out on addition of conc. solution of alkali to impure bauxite.AnswerFe2O3View full question & answer→
Question 101 MarkA mixture of 3 parts of Fe2O3 and one part of powdered aluminium used for spot welding.AnswerThermiteView full question & answer→
Question 111 MarkA compound of aluminium added to the alumina so as to reduce it melting point.AnswerCryoliteView full question & answer→
Question 131 MarkThe processes involved in the extraction of metals from their ores.AnswerMetallurgyView full question & answer→
Question 141 MarkThe unwanted impurities such as mud, sand, etc., associated with ore.AnswerGangueView full question & answer→
Question 151 MarkThe compounds of metals found in nature associated with earthly impurities.AnswerMineralsView full question & answer→